Lock nut



- 'March 27, 1934. I w, M BECK 1,952,305

LOCK NUT Filed Dec. 29, 1931 Z I Tm fen/for:

{If/gain M'Zizhm M. fleck,

WWW);

Patented Mar. 27, 1934 UNITED STATES LOCK NUT William M. Beck, Elwood,Ind.. assignor ofonehalf to Charles M. Mitchell; and one-fifth to FrankW. Rockafellar Application December 29, 1931, Serial No. 583,724

2 Claims.

This invention relates to new and useful improvements in lock nuts.

One object of my invention is to provide a lock nut, which, when screwedup into contact with 5 the bearing surface, will not work loose on thebolt by reason of reverse rotation.

A further object of my invention is to provide a lock nut that willeliminate the use of lock washers or cotter pins.

0 A still further object of my invention is to provide a lock nut thatwill eliminate frequent checking and tightening, as required by othertypes of nuts and washers now in use.

Still another object of my invention isto pro- 5 vide simple andeconomical locking means that may be applied to any type or types ofnuts.

With the foregoing and other objects in view that will appear as theinvention of my invention is better understood, the same consists in the0 novel features of construction, combination and arrangement of partsillustrated in the accompanying drawing and more particularly pointedout in the appended claims.

In the accompanying drawing, which is for 5 illustrative purposesonly-and is therefore not drawn to scale:

Figure 1 is a face view of the lock nut, equipped with both lockingteeth and locking ridges.

Figure 2 is a side elevation, illustrating the ap- 0 plication of thedevice to a bolt.

Figure 3 is a section, taken on line 3-3 of Figure 1. 1

Figure 4 is a diagrammatic view of the construction shown in Figure 1.

5 Figure 5 is a fragmentary face view of a lock nut provided withlooking teeth only and Figure 6 is a view similar to Figure 5 of a locknut provided with locking ridges only.

Referring to the drawing for a more particular D description of myinvention, and in which drawing like parts are designated by likereferences throughout the several views, A designates the bolt, B thebearing surface against which the lock nut is screwed and C my improvedlock nut.

In carrying out my invention, one or both faces of the nut-C is providedwith an alternating series of locking teeth and radially disposed lock-00 ing ridges 1 and 2, respectively. The aforesaid teeth and ridges aresuccessively graduated in height entirely around the face of the nut,whereby each tooth and ridge will gradually and successively come intocontact with the bearus ing surface B.' The teeth and ridges arepreferably struck from the face of the nut by a suitable tool (notshown) and are disposed at the desired slant or angle,. If desired, theridges 2 may be eliminated and the locking teeth i only 7o employed orvice versa, as shown in Figures 3 and 4, respectively, of the drawing.-

My locking means is hardened with cyanide of potassium or other agentand may be applied to any type of nut and to either or both faces 75thereof.

From the foregoing description taken in connection with the drawing, itis thought that the construction, operation and advantages of myinvention will be readily understood, without rego v quiring a moreextended explanation.

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principle orsacriiic- 4 ing any of the advantages of my invention, as 55 defined inthe appended claims.

Having described my invention, what I claim as new and desire to. secureby Letters ent, is:

1. A lock nut formed on one face with an alternating series of lockingteeth and locking ridges, go said teeth and ridges being successivelygraduated in height entirely around the nut.

2. A rotatable fastener having on the workengaging face thereof a seriesof radially disposed locking ridges successively graduated in height. 95

WILIJAMM. BECK.

